WO2018235170A1

WO2018235170A1 - Machine tool management system and machine tool management method

Info

Publication number: WO2018235170A1
Application number: PCT/JP2017/022738
Authority: WO
Inventors: 博雅山本; 雅敏伊藤; 憲司佐野; 達哉松田; 健人吉田; 隼平北山
Original assignee: ヤマザキマザック株式会社
Priority date: 2017-06-20
Filing date: 2017-06-20
Publication date: 2018-12-27
Also published as: JP6342593B1; EP3483679A1; US20200125072A1; JPWO2018235170A1; CN110023858A; EP3483679A4; CN110023858B; EP3483679B1

Abstract

Provided are a machine tool management system and a machine tool management method which are capable of easily identifying, for example, the cause of a machining defect. This machine tool management system (100) is provided with a machine tool (2), a memory (4E), and a control circuit (4C). The machine tool (2) processes a workpiece (10). The memory (4E) records detection information, detected about the machine tool, in association with the detection time of the detection information. The control circuit (4C) is connected to the memory (4E). The control circuit (4C) determines whether the detection information is selection detection information satisfying a predetermined determination criterion. The control circuit (4C) records, in the memory (4E), a plurality of pieces of the selection detection information in association with the detection times when the pieces of the selection detection information are detected.

Description

Machine tool management system and method of managing machine tools

The present invention relates to a machine tool management system and a machine tool management method.

The machine tool rotates the work and / or the tool to process the work. Further, a system for managing data acquired during operation of a machine tool already exists (Patent Documents 1 to 3).

Japanese Patent Application Publication No. 2007-4601 JP, 2015-229216, A JP 2017-33346 A

During processing using a machine tool, processing defects and the like may occur. In this case, for example, a machine tool management system and a machine tool management method capable of easily identifying the cause of the machining defect are desired.

Therefore, the present invention provides a machine tool management system and a machine tool management method that can easily identify the cause of machining defects, for example.

According to a first aspect of the present invention, a machine tool management system comprises a machine tool, a memory, and a control circuit. A machine tool processes a workpiece. The memory records detection information detected for the machine tool in association with a point in time when the detection information is detected. The control circuit is connected to the memory. The control circuit determines whether the detection information is selection detection information that satisfies a predetermined determination condition. The control circuit records the plurality of pieces of selection detection information in the memory in association with the time when the selection detection information is detected.

Further, according to the second aspect of the present invention, the method of managing a machine tool includes the step of recording detection information detected for the machine tool in a memory in association with the time when the detection information is detected. . It is determined whether the detection information is selection detection information that satisfies a predetermined determination condition. A plurality of selection detection information is recorded in the memory in association with the point in time when the selection detection information is detected.

Further, according to a third aspect of the present invention, a machine tool management system includes a machine tool, a memory, an operation unit, and a control circuit. A machine tool processes a workpiece. The memory records detection information detected for the machine tool in association with a point in time when the detection information is detected. The operation unit receives the search condition. The control circuit is connected to the memory. The control circuit selects search detection information that satisfies the search condition received by the operation unit from among the plurality of detection information stored in the memory. The control circuit records a plurality of search detection information in the memory in association with the time when the search detection information is detected.

In the machine tool management system according to the first and second aspects of the present invention, the control circuit determines whether the detection information is selection detection information that satisfies a predetermined determination condition. The control circuit records the plurality of pieces of selection detection information in the memory in association with the time when the selection detection information is detected.

Therefore, for example, the cause of the processing failure can be easily identified.

Further, in the machine tool management system according to the third aspect of the present invention, the control circuit selects search detection information that satisfies the search condition received by the operation unit from among the plurality of detection information stored in the memory. Do. The control circuit records a plurality of search detection information in the memory in association with the time when the search detection information is detected.

The objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematic structure of the machine tool management system which concerns on embodiment. It is a figure which shows schematic structure in a management apparatus. It is a figure which shows the structural example of detection information. It is a flowchart explaining operation | movement until detection information and selection detection information are recorded in memory. It is a figure which illustrates a mode that it is judged whether detection information meets a judgment condition. It is a figure which illustrates the mode of the detection information recorded in memory. It is a figure which illustrates the mode of the selection detection information recorded in memory. It is a flowchart explaining operation | movement until a graph is displayed using selection detection information. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a flowchart explaining operation | movement until a graph is displayed using search selection detection information. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a flowchart explaining operation | movement until a graph is displayed using search detection information. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display. It is a figure which shows the example of a display of a display.

The present invention will be specifically described below based on the drawings showing the embodiments thereof. In the drawings, the same reference numerals indicate corresponding or substantially the same configurations.

Embodiment 1
FIG. 1 is a diagram showing a schematic configuration of a machine tool management system 100 according to the first embodiment.

As shown in FIG. 1, the machine tool management system 100 includes a machine tool 2, a numerical control (NC) device 3, and a management device 4.

As shown in FIG. 1, the machine tool 2 includes a base 1, a carriage 2A having a tool headstock 2a, and a workpiece headstock 2B.

A carriage 2A, a work headstock 2B, and an NC device 3 are disposed on the base 1. The carriage 2A is movably installed on the upper surface of the base 1. The workpiece headstock 2B is fixed on the upper surface of the base 1. In addition, the tool headstock 2a is movably disposed on the side wall of the carriage 2A. As a result, the tool headstock 2a can move relative to the work stockhead 2B.

The machine tool 2 processes the workpiece 10. The configuration of the machine tool 2 will be described below.

As shown in FIG. 1, in the tool spindle stock 2a, a tool spindle 2a1 is rotatably disposed. Moreover, the tool 15 is attached to the said tool spindle 2a1. In the workpiece headstock 2B, a workpiece spindle 2B1 is rotatably disposed. Further, a workpiece (object to be processed) 10 is attached to the workpiece spindle 2B1.

When machining the workpiece 10, the machine tool 2 rotates the tool 15 and / or the workpiece 10 by rotating the tool spindle 2a1 and / or the workpiece spindle 2B1. For example, when the tool spindle 2a1 or the like in rotation comes in contact with the work 10, desired cutting or the like is performed on the work 10.

The machine tool management system 100 also includes a detection unit that detects at least one or more physical quantities of the machine tool 2 (during machining by the machine tool 2 and during machining stop). For example, as shown in FIG. 1, the machine tool management system 100 includes a tool sensor unit 21, a work sensor unit 22, and a base sensor unit 23 as the detection unit.

The tool sensor unit 21 is disposed on the tool spindle 2a. The tool sensor unit 21 includes a plurality of sensors. And each sensor of tool sensor unit 21 measures and detects each physical quantity which arises on the tool side. For example, the tool sensor unit 21 has vibration values (for example, vibration acceleration, vibration displacement, vibration velocity, etc.) generated in the tool spindle 2a1, tool side spindle load generated in the tool spindle 2a1, spindle rotation speed of the tool spindle 2a1, and tool spindle Measure and detect the feed shaft load etc. generated on the 2a1 side.

The tool sensor unit 21 has the following sensors as an example.

The tool sensor unit 21 has an acceleration sensor that measures vibration, a rotary encoder that detects the rotational angle and rotational speed of the tool spindle 2a1 / feed axis, and a linear encoder that detects the position of the tool spindle 2a / carriage 2A. In addition, it is also possible to calculate the position by the rotary encoder of the feed shaft and detect the position of the tool spindle stock 2a / the carriage 2A without using the linear encoder.

The tool sensor unit 21 also has a temperature sensor for measuring the temperature of the tool spindle 2a1 / feed axis motor, a temperature sensor for measuring the temperature of the tool spindle 2a / carriage 2A / feed axis, and the like. The former temperature sensor is, for example, built in a motor. The latter temperature sensor is installed, for example, by embedding a thermocouple or the like at a desired position of the tool headstock 2a / the carriage 2A / the feed axis.

Moreover, the tool sensor unit 21 has a sensor which measures the current value which flows into each amplifier which controls each motor. The spindle load and the feed axis load can be detected based on the measured current value.

The workpiece sensor unit 22 is disposed on the workpiece headstock 2B. The work sensor unit 22 includes a plurality of sensors. And each sensor of work sensor unit 22 measures and detects each physical quantity which arises on the work side. For example, the work sensor unit 22 has vibration values (for example, vibration acceleration, vibration displacement, vibration speed, etc.) generated in the work spindle 2B1, work-side spindle load generated in the work spindle 2B1, spindle rotation speed of the work spindle 2B1, and work spindle Measure and detect the feed shaft load etc. generated on the 2B1 side.

The work sensor unit 22 includes the following sensors as an example.

The work sensor unit 22 has an acceleration sensor that measures vibration, and a rotary encoder that detects the rotation angle and the rotation speed of the work spindle 2B1.

The work sensor unit 22 also has a temperature sensor that measures the temperature of the spindle motor, a temperature sensor that measures the temperature of the workpiece headstock 2B, and the like. The former temperature sensor is, for example, built in a motor. The latter temperature sensor is installed, for example, by embedding a thermocouple or the like in a desired position of the workpiece headstock 2B.

Further, the work sensor unit 22 has a sensor that measures the value of the current flowing to the amplifier that controls the work spindle motor. The spindle load can be detected based on the measured current value.

The base sensor unit 23 is disposed on the base 1. The base sensor unit 23 includes a plurality of sensors. And each sensor of base sensor unit 23 measures and detects each physical quantity which arises on the base side. For example, the base sensor unit 23 measures and detects vibration values (for example, vibration acceleration, vibration displacement, vibration velocity, etc.) generated in the base 1, flow rate values of liquid etc., temperature generated in the base 1, etc. .

The base sensor unit 23 has the following sensors as an example.

The base sensor unit 23 is an acceleration sensor that measures the vibration of the base 1, each temperature sensor that measures the temperature of the base 1, the temperature of the coolant, the factory environment temperature, etc., and a flow sensor that measures the flow of the coolant. It has a pressure sensor etc. which measure the pressure of hydraulic fluid. The temperature sensor is installed, for example, by embedding a thermocouple or the like in a desired place.

Each

sensor unit

21, 22, 23 is communicably connected to the management device 4. As a result, the detection results detected by the

sensor units

21, 22, 23 are transmitted to the management device 4. Each

sensor unit

21, 22, 23 is communicably connected to the NC device 3. Therefore, each detection result can also be transmitted to the NC device 3. Moreover, the said detection result is contained in the detection information mentioned later as data.

Next, the configuration of the NC device 3 will be described.

The NC device 3 is disposed relative to the base 1. The NC device 3 is communicably connected to the machine tool 2. Further, as described above, the NC device 3 is communicably connected to the

sensor units

21, 22, 23.

The NC device 3 controls the machine tool 2. A plurality of pieces of information related to the processing of the machine tool 2 are set and registered in the NC device 3. Further, in the NC device 3, a plurality of processing programs are set. For example, the machining program can be created by the user according to the object to be machined and registered in the NC device 3. For example, when the object to be processed is determined, a predetermined processing program may be initially set in the NC apparatus 3.

The NC device 3 controls the processing operation of the machine tool 2 according to the processing program. In the processing program, the method of processing the workpiece 10 by the machine tool 2 (for example, the type of tool 15 to be used, the procedure of processing, the moving position and moving path of the tool spindle 2a1, and the workpiece 10 attached to the workpiece spindle 2B1 Processing position and processing path etc.) are specified.

As shown in FIG. 1, the NC apparatus 3 has a memory 3A including a RAM and a ROM. Various data are stored in the memory 3A. For example, the memory 3A stores various setting / registration data including a plurality of processing programs. Further, each detection result transmitted from each

sensor unit

21, 22, 23 may be stored in the memory 3A.

Further, as shown in FIG. 1, the NC device 3 has a control circuit (CPU) 3B. The control circuit 3B is connected to the memory 3A. The control circuit 3B reads the machining program stored in the memory 3A, and performs control on the machine tool 2 according to the machining program.

Further, as shown in FIG. 1, the NC device 3 has a display unit 3C and a NIC (Network Interface Card) 3D. The memory 3A, the control circuit 3B, the display unit 3C, and the NIC 3D are communicably connected to each other via the bus 3L. The display unit 3C itself may perform predetermined display in a touch panel type, or may perform predetermined display on the monitor M1 connected to the display unit 3C as illustrated in FIG.

For example, when the user performs an operation on the touch panel type display unit 3C or an operation button connected to the NC device 3, it is possible to create a machining program and change various settings. In addition, the operation of the machine tool 2 can also be performed directly through the touch panel type display unit 3C or an operation button or the like connected to the NC device 3.

The NC device 3 also functions as an alarm generation device that issues an alarm for the machine tool 2 (during machining and stoppage of the machine tool 2). In other words, the NC device 3 is a control device including an alarm generation device.

In the NC device 3 which is an alarm generation device, the control circuit 3B determines, for example, whether or not an abnormality has occurred in the processing using the machine tool 2. That is, the NC apparatus 3 can detect that an abnormality has occurred in the machine tool 2. The control circuit 3B determines and detects the presence or absence of the abnormality based on the physical quantities transmitted from the machine tool 2 and the

sensor units

21, 22, and 23. In other words, the NC device 3 determines whether an alarm needs to be issued for the abnormality.

For example, various detection results (for example, current value, temperature, flow rate value, etc.) detected in the machine tool 2 including the base 1 and alarm thresholds (for example, alarm threshold current value, alarm) preset in the memory 3A The control circuit 3B compares the threshold temperature, the alarm threshold flow value, and the like.

When the control circuit 3B determines that the detection result exceeds the alarm threshold as a result of the comparison, it detects "abnormal" and determines that it is necessary to notify an alarm such as an alarm. For example, when the control circuit 3B detects an excessive current value due to an abnormal load, an abnormal temperature rise, a fluid leak or the like on the machine tool 2 side, it determines that there is an abnormality and issues an alarm.

Next, the management device 4 will be described.

For example, as shown in FIG. 1, the management device 4 is installed at a place away from the place where the machine tool 2 and the like are set. Note that, unlike FIG. 1, the management device 4 and the NC device 3 may be configured as the same device.

In the configuration example of FIG. 1, the management device 4 is communicably connected to the NC device 3 via the communication line W1. However, unlike the configuration of FIG. 1, the management device 4 and the NC device 3 may be communicably connected wirelessly. Further, in the configuration example of FIG. 1, the management device 4 is communicably connected to the machine tool 2 and each of the

sensor units

21, 22 and 23 through the communication line W2. The management device 4 may be communicably connected to the

sensor units

21, 22, 23 via the NC device 3.

Also, data stored in the management device 4 can be transferred to a large capacity server via a LAN (Local Area Network), the Internet, or the like, and can be stored in the large capacity server.

The management device 4 acquires and manages a plurality of detection information detected during machining of the machine tool 2 and during machining stop. Further, the management device 4 analyzes the detection information. The management device 4 also displays various information including the result of the analysis. The detection information will be described later.

In the machine tool management system 100 according to the present embodiment, the management device 4 has a configuration shown in FIG. FIG. 2 is a diagram showing an internal configuration of the management device 4.

As shown in FIG. 2, the management device 4 includes a communication unit (NIC) 4A, a display 4B, a control circuit (CPU) 4C, an operation unit 4D, and a memory 4E. In the management device 4, the communication unit 4A, the display 4B, the control circuit 4C, the operation unit 4D, and the memory 4E are communicably connected to each other via the system bus 4L.

For example, the system bus 4L, the communication unit 4A, the display 4B, the control circuit 4C, the operation unit 4D, the memory 4E and the like are electrically mounted on the substrate. The system bus 4L, the communication unit 4A, the display 4B, the control circuit 4C, the operation unit 4D, the memory 4E, and the substrate constitute a circuit for realizing the function of the management device 4.

The communication unit 4A is controlled by the control circuit 4C. The communication unit 4A is connected to the NC device 3 via the communication line W1. Further, the communication unit 4A is connected to the machine tool 2 and each of the

sensor units

21, 22, and 23 through the communication line W2. Therefore, the communication unit 4A can transmit and receive data with the machine tool 2, the NC device 3, and the

sensor units

21, 22, 23.

The display 4B is controlled by the control circuit 4C. Various information is displayed on the display 4B using, for example, the screen of the monitor M2.

The operation unit 4D is controlled by the control circuit 4C. In addition, the operation unit 4D receives an operation (input of a command, input of setting information, input of selection information, and the like) from a user or the like, for example, using the mouse OP1 and the keyboard OP2. The operation unit 4D may be disposed on the display 4B by providing the touch panel type display 4B.

The control circuit 4C includes a central control unit (CPU) and a memory controller.

The memory 4E has a read only memory (ROM) and a random access memory (RAM). The ROM has a non-temporary recording medium. The RAM has a temporary storage medium. The memory 4E has a plurality of storage areas R1 and R2 each having an address.

The control circuit 4C controls the memory 4E to store data in the storage areas R1 and R2 of the memory 4E. Further, the control circuit 4C controls the memory 4E so as to read data from the storage areas R1 and R2 of the memory 4E.

A plurality of detection information detected for the machine tool 2 (during machining by the machine tool 2 and during machining stop) is recorded in the storage area R1 in the memory 4E. Each piece of detection information is recorded in a storage area R1 in the memory 4E in association with a point (for example, date and time) at which the detection information is detected.

Further, a plurality of selection detection information is recorded in the storage area R2 in the memory 4E. Each piece of selection detection information is recorded in a storage area R2 in the memory 4E in association with a point (for example, date and time) at which the selection detection information is detected. The selection detection information is detection information that satisfies a predetermined determination condition.

Here, the detection information will be described.

During machining by the machine tool 2 and during machining stop, each

sensor unit

21, 22, 23 detects at least one or more physical quantities. The management device 4 acquires the physical quantities detected by the

sensor units

21, 22, 23 as part of the detection information. Therefore, in the detection information acquired by the management device 4, the physical quantities detected by the

sensor units

21, 22, 23 are included as data.

In addition, the NC device 3 functioning as an alarm generation device detects the presence or absence of an alarm in the NC device 3 during processing by the machine tool 2 and during processing stop. Further, when an alarm is generated, the NC device 3 also detects the type of alarm by itself. The management device 4 acquires alarm information (presence or absence of an alarm, type of alarm, etc.) regarding an alarm detected by the NC device 3 as a part of detection information. Therefore, the detection information acquired by the management device 4 includes, as data, alarm information related to the alarm detected by the NC device 3.

Further, the NC device 3 executes a processing program to control the processing operation of the machine tool 2. The NC device 3 detects each processing condition information defined in the processing program being executed. The management device 4 acquires each piece of processing condition information detected by the NC device 3 as a part of the detection information. Therefore, in the detection information acquired by the management device 4, the respective processing condition information detected by the NC device 3 is included as data.

FIG. 3 is a diagram conceptually showing a configuration example of detection information.

As shown in FIG. 3, the detection information D1 is composed of a plurality of physical quantity data d1, alarm data (alarm information) d2, processing condition data (processing condition information) d3 and the like.

Here, the detection information D1 illustrated in FIG. 3 is, for example, information detected (acquired) at time T1 during processing by the machine tool 2. The data d1 to d3 constituting the detection information D1 are not limited to the above, and may include other data detected (acquired) at the time when the detection information D1 is detected.

Each physical quantity data d1 illustrated in FIG. 3 is data indicating each physical quantity related to processing, which is detected by the

sensor units

21, 22, and 23 at time T1 while the machine tool 2 is performing processing.

For example, physical quantity data d1 is generated at tool spindle 2a1 (for example, vibration acceleration, vibration displacement, vibration velocity, tool side spindle load, spindle rotation speed, etc. detected at time T1 by tool sensor unit 21) Data indicating the physical spindle (eg, vibration acceleration, vibration displacement, vibration velocity, workpiece side spindle load, spindle rotational speed, etc. detected at time T1 by the work sensor unit 22) generated in the workpiece spindle 2B1. , Other physical quantities (for example, vibration acceleration, vibration displacement and vibration velocity detected at time T1 by the base sensor unit 23, flow values of various liquids or the like generated at the base 1 detected at time T1, And the temperature generated at the base 1, etc. detected at time T1) It is to data.

The number and type of physical quantity data d1 included in the detection information D1 may be arbitrarily selected by the user.

The alarm data d2 illustrated in FIG. 3 is data including information on an alarm detected by the NC device 3 having a function as an alarm generation device at time T1 while the machine tool 2 is working. .

For example, the alarm data d2 includes data indicating the presence or absence of the occurrence of an alarm detected at time T1. Also, when the alarm data d2 indicates that the alarm has been issued at time T1, data indicating the type of the issued alarm (for example, where in the machine tool management system 100 the cause of the alarm issue is Data to identify the cause).

The machining condition data d3 exemplified in FIG. 3 is detected (acquired) from the machining program being executed by the NC device 3 at the time T1 while the machine tool 2 is machining. It is data about processing conditions.

For example, machining condition data d3 includes program identification data for identifying a machining program being executed at time T1. Further, the processing condition data d3 includes tool identification data indicating the type of tool 15 used by the machine tool 2 at time T1. The processing condition data d3 also includes workpiece identification data indicating the type of workpiece 10 to be machined by the machine tool 2 at time T1. The machining condition data d3 also includes effective block identification data indicating the type of block being executed by the machine tool 2 at time T1.

Next, a method of managing machine tools (that is, a method of managing using the machine tool management system 100) will be described.

First, storage processing of detection information and selection detection information in the machine tool management system 100 will be described using the flowchart of FIG. 4.

The management apparatus 4 is instructed to start the detection information acquisition process. Then, the control circuit 4C reads data acquisition browsing software stored in the memory 4E. Then, the control circuit 4C performs control according to the data acquisition software (see START in FIG. 4).

The memory 4E stores various preset threshold values. The control circuit 4C reads various threshold values stored in the memory 4E (step S1 in FIG. 4).

Next, the management device 4 carries out an acquisition process of detection information detected on the machine tool 2 side and the NC device 3 side (step S2 in FIG. 4).

Specifically, the control circuit 4C controls the communication unit 4A to command acquisition of detection information. Then, the communication unit 4A acquires the physical quantity detected at the time of the detection information acquisition command from the

sensor units

21, 22, 23 as the detection information by the

sensor units

21, 22, 23. Further, the communication unit 4A acquires alarm information detected at the time of the detection information acquisition command from the NC apparatus 3 as detection information by the NC device 3. Furthermore, each processing condition information detected at the time of the detection information acquisition command is acquired by the NC device 3 from the NC device 3 as detection information.

Next, the control circuit 4C creates detection information D1 including the acquired physical quantity, the acquired alarm information, and the acquired processing condition information and the like as constituent elements (see FIG. 3). Then, the control circuit 4C associates the detection information D1 with the time when the detection information D1 is detected (step S3 in FIG. 4). Here, the physical quantity data d1, the alarm information d2, and the processing condition information d3 included in the detection information D1 are detected at almost the same time.

Next, the control circuit 4C determines whether the detection information D1 acquired in step S2 is selection detection information that satisfies a predetermined determination condition (step S4 in FIG. 4).

Here, the determination condition includes, for example, at least one or more abnormality determination threshold values and / or information for determining the occurrence of an alarm. For example, each abnormality determination threshold value is provided corresponding to each physical quantity included in the detection information.

For example, with regard to the machine tool 2, any abnormality (abnormal vibration detected in the machine tool 2, abnormal load detected in the machine tool 2, abnormal rotational speed detected in the machine tool 2, machining stop by the machine tool 2, machining stop) An abnormal temperature detected during the generation of an alarm may occur. The detection information detected at the time of occurrence of the abnormality includes data indicating the occurrence of the abnormality.

Therefore, as an example, the determination condition may be a condition for identifying whether the detection information D1 has data indicating occurrence of the abnormality. In this case, in step S4, the control circuit 4C determines whether the detection information acquired in step S2 is selection detection information having data indicating occurrence of an abnormality.

The determination process of the selection detection information in step S4 will be specifically described using an example.

First, the control circuit 4C compares the physical quantity data d1 included in the detection information D1 with the abnormality determination threshold.

As illustrated in FIG. 3, the detection information D1 includes a plurality of physical quantity data d1. Therefore, for example, in the memory 4E of the management device 4, a plurality of abnormality determination thresholds are set in advance. In addition, the said abnormality determination threshold value can be changed into arbitrary values, for example by operation with respect to operation part 4D by a user.

Here, each physical quantity data d1 included in the detection information D1 and each abnormality determination threshold value have a one-to-one correspondence. Therefore, the control circuit 4C compares, for each physical quantity data d1 included in the detection information D1, the physical quantity data d1 with the abnormality determination threshold value corresponding to the physical quantity data d1.

Further, the control circuit 4C determines whether the alarm data d2 included in the detection information D1 indicates that an alarm has occurred in the NC device 3 or not.

FIG. 5 is a conceptual example showing how the control circuit 4C carries out the above comparison and the above determination on the detection information D1 acquired in step S2.

In the example shown in FIG. 5, the control circuit 4C compares the first physical quantity data d1-1 with the first abnormality determination threshold th1. Further, the control circuit 4C compares the second physical quantity data d1-2 with the second abnormality determination threshold th2. Further, the control circuit 4C compares the third physical quantity data d1-3 with the third abnormality determination threshold th3. Further, the control circuit 4C compares the Nth physical quantity data d1-N with the Nth abnormality determination threshold thN. Furthermore, the control circuit 4C determines whether the alarm data d2 indicates the occurrence of an alarm.

In step S4, the control circuit 4C performs a plurality of the above-described comparison processes using the abnormality determination threshold value for the detection information D1. It is assumed that the control circuit 4C detects the physical quantity data d1 that exceeds the abnormality determination threshold value in at least one comparison as a result of the plurality of comparison processes. In this case, the control circuit 4C determines and selects the detection information D1 having the physical quantity data d1 exceeding the abnormality determination threshold as the selection detection information ("Yes" in step S4 of FIG. 4).

Further, in step S4, as a result of the above determination regarding the alarm, it is assumed that the control circuit 4C determines that the alarm data d2 included in the detection information D1 indicates the occurrence of an alarm. In this case, the control circuit 4C determines and selects the detection information D1 having the alarm data d2 indicating the occurrence of the alarm as the selection detection information ("Yes" in step S4 of FIG. 4).

In step S4, it is assumed that the control circuit 4C determines that the detection information D1 acquired in step S2 is selection detection information that satisfies a predetermined determination condition. In this case, "Yes" is obtained in step S4 of FIG. 4, and the process proceeds to step S5 of FIG.

In step S5, control circuit 4C associates the selected detection information determined and selected in step S4 with the point in time when the selected detection information is detected (that is, along with the point in time associated in step S3). Record in R2. Then, the process proceeds to step S6.

On the other hand, in step S4, it is assumed that the control circuit 4C determines that the detection information D1 acquired in step S2 does not satisfy the predetermined determination condition. In this case, "No" is obtained in step S4 of FIG. 4, and the process proceeds to step S6 of FIG.

Next, in step S6, the control circuit 4C associates the detection information D1 acquired in step S2 with the point in time when the detection information D1 is detected (that is, along with the point in time associated in step S3). It records in storage area R1. That is, in step S6, the detection information D1 acquired in step S2 is recorded in the storage area R1 of the memory 4E regardless of the determination in step S4.

Thereafter, control circuit 4C determines whether the end of the detection information acquisition process has been input, for example, at operation unit 4D (step S7 in FIG. 4).

Here, when the control circuit 4C determines that the end of the detection information acquisition process is input, the determination in step S7 of FIG. 4 is "Yes", and the detection information acquisition process ends.

On the other hand, when the control circuit 4C determines that the end of the detection information acquisition process has not been input, the determination in step S7 of FIG. 4 is "No", and the process returns to step S2 and immediately or after a predetermined time has elapsed. The operations after step S2 are performed again.

The detection information acquisition process shown in FIG. 4 is repeatedly executed until an end is instructed. The repetition of the detection information acquisition processing may be performed at a predetermined timing set in advance.

FIG. 6 is a diagram schematically illustrating a plurality of pieces of detection information recorded in the storage area R1 of the memory 4E.

As shown in FIG. 6, a plurality of detection information D1, D2, D3, D4, ..., DN-1, DN are recorded in the storage area R1. In the memory area R1, each of the detection information D1, D2, D3, D4, ..., DN-1, DN is detected as the detection information D1, D2, D3, D4, ..., DN-1, DN. Time points T1, T2, T3, T4,..., TN-1 and TN are recorded in association with each other. In the example shown in FIG. 6, the detection information D1 is recorded in the storage area R1 in association with the time point T1. The detection information D2 is recorded in the storage area R1 in association with the time point T2. Further, the detection information DN is recorded in the storage area R1 in association with the time point TN.

Time points T1, T2, T3, T4, ..., TN-1, and TN are, for example, information including date and time. For example, it is assumed that the detection information D1 is detected at 12:30:10 on April 20, 2017. In this case, the information of the time point T1 associated with the detection information D1 indicates 12:30:10 on April 20, 2017.

Also, when the detection information D1, D2, D3, D4, ..., DN-1, DN are recorded in the memory 4E, the control circuit 4C determines that the time T1, T2, T3, T4, ..., TN Detection information D1, D2, D3, D4,..., DN-1 in the order of T1, T2, T3, T4,. , DN. In this case, in the example shown in FIG. 6, the detection information D2 is information detected after the detection information D1. The detection information D3 is information detected after the detection information D2. The detection information DN is information detected after the detection information DN-1.

FIG. 7 is a diagram schematically illustrating a plurality of selection detection information items recorded in the storage area R2 of the memory 4E.

In the example shown in FIG. 7, the detection information D1, D3,..., Di is selected from among the plurality of detection information D1, D2, D3, D4,. It is determined and selected as detection information, and is recorded in the storage area R2. Further, as shown in FIG. 7, each of the selection detection information D1, D3,..., Di is time T1, T3,..., When the selection detection information D1, D3,. Each is associated with Ti and stored in a storage area R2 in the memory 4E.

The control circuit 4C associates the plurality of pieces of selection detection information D1, D3, ..., Di with the selection detection information D1, D3, ..., Di in the storage area R2 of the memory 4E (that is, Each is arranged based on the point in time when the selection detection information is detected. That is, the plurality of pieces of selection detection information D1, D3, ..., Di are arranged in chronological order of detection based on the time points T1, T3, ..., Ti.

Next, using the data recorded in the storage area R2 of the memory 4E, a predetermined image is displayed on the display 4B. The said operation | movement is concretely demonstrated using the flowchart shown in FIG.

The control circuit 4C reads data browsing software stored in the memory 4E. Then, the control circuit 4C performs control according to the data browsing software (see START in FIG. 8).

The control circuit 4C causes the display 4B to display the plurality of pieces of selection detection information stored in the storage area R2 (step S31 in FIG. 8).

Here, in the display 4B, the selection detection information is displayed in a list using predetermined display items indicating the respective selection detection information. For example, a time point associated with the selection detection information can be adopted as the predetermined display item.

FIG. 9 is a view showing a state in which the plurality of selection detection information D1, D3,..., Di shown in FIG. 7 are displayed on the display 4B using predetermined display items. In FIG. 9, the predetermined display items are time points T1, T3,..., Ti associated with the selection detection information. Each time point T1, T3, ..., Ti is displayed as year / month / day and hour / minute / second.

When FIG. 9 is displayed on the display 4B, the display at the time T1 shows the selection detection information D1, the display at the time T3 shows the selection detection information D3, and the display of the time Ti is the selection The detection information Di is shown.

Therefore, in the display example of FIG. 9, the time T1, which is a predetermined display item, is linked to the selection detection information D1 stored in the storage area R2. Further, time T3 which is a predetermined display item is linked to the selection detection information D3 stored in the storage area R2. Further, the point of time Ti, which is a predetermined display item, is linked to the selection detection information Di stored in the storage area R2.

In FIG. 9, each predetermined display item is arranged in time series order based on the time points T1, T3, ..., Ti, and is displayed on the display 4B. Here, when the number of predetermined display items is large, the number displayed on one screen is limited. Therefore, in such a case, at least a part of the predetermined display item is displayed on the display 4B. Then, the other predetermined display items are displayed on the display 4B using a scroll bar or the like.

Next, one of the plurality of predetermined display items displayed in a list on the display 4B is selected (step S32 in FIG. 8). Hereinafter, the operation of step S32 will be described in detail.

For example, it is assumed that the display 4B displays the display of FIG. Then, the user selects the time point T3 as a predetermined display item for the operation unit 4D. Then, it is assumed that the user performs an operation of graphing the operation unit 4D. In this case, the control circuit 4C recognizes that the operation unit 4D receives the selection and the operation, and carries out the next operation.

The control circuit 4C extracts the next detection information from among the plurality of pieces of detection information D1, D2, D3, D4, ..., DN-1, DN stored in the storage area R1 of the memory 4E. That is, the control circuit 4C extracts, from the memory 4E, a plurality of pieces of detection information including the selection detection information D3 corresponding to the selected predetermined display item (time T3).

Here, the plurality of pieces of detection information to be extracted are detected information detected within a predetermined time including the selected time point T3. The predetermined time range may be arbitrarily changed by the user. Further, the time-series position of the selected time point T3 within the predetermined time may be arbitrarily settable. For example, the selected time point T3 may be set to be located at the center within a predetermined time.

Next, the control circuit 4C creates a graph indicating temporal change of the data, using the data included in the plurality of pieces of extracted detection information. Thereafter, the control circuit 4C causes the display 4B to display the created graph (step S33 in FIG. 8).

FIG. 10 is a diagram showing an example of a graph displayed on the display 4B.

In the example of FIG. 10, the created graph and a plurality of predetermined display items (time points T1, T3,..., Ti) shown in FIG. 9 are displayed in parallel on the display 4B.

As described above, when the time point T3 is selected, a plurality of detection information detected within a predetermined time including the time point T3 is extracted from the memory 4E and graphed. In the example of FIG. 10, a graph is created using physical quantity data d1 indicating the vibration acceleration generated in the tool spindle 2a1, which is included in each extracted detection information. In other words, in FIG. 10, temporal changes in vibrational acceleration occurring in the tool spindle 2a1 detected within a predetermined time including the time point T3 are displayed on the display 4B as a graph.

Here, the type of graph to be displayed on the display 4B can be arbitrarily set by the user. As described above, each piece of detection information includes a plurality of physical quantity data d1. Therefore, it is possible for the user to select which of the plurality of physical quantity data d1 changes with time of the physical quantity data d1 are graphed and displayed.

Here, as described above, the display item (point in time T3) is selected from among the plurality of predetermined display items by the operation on the operation unit 4D by the user. That is, the selection detection information D3 corresponding to the time point T3 is selected by the user from among the plurality of selection detection information D1, D3, ..., Di. Therefore, for example, as shown in FIG. 10, the control circuit 4C visibly displays the position of data (referred to as selection data) included in the selection detection information D3 selected by the user on the graph.

In other words, in the graph displayed on the display 4B, the control circuit 4C emphasizes the position corresponding to the selection data and differentially displays it with the position of the other graph (the position of the data which is not the selection data). In the example of FIG. 10, in the graph, the positions corresponding to the selection data are displayed as black circles.

In the example of FIG. 10, the predetermined time is set such that the selected time point T3 is located at a place other than the center within the predetermined time.

The above is the operation up to the graph display shown in FIG. On the other hand, the management device 4 can also perform the following display.

It is assumed that the user performs an operation of instructing graph switching to the operation unit 4D. For example, as shown in FIG. 10, a "switch" icon indicating graph switching is displayed on the display 4B, and the user operates the operation unit 4D to click the "switch" icon. In this case, the control circuit 4C recognizes that the operation unit 4D has received the operation, and displays a plurality of types of graphs on the display 4B.

FIG. 11 is a diagram illustrating a state after graph switching has been performed.

As described above, for example, when time point T3 is selected, a plurality of detection information detected within a predetermined time including the time point T3 is extracted from the memory 4E and graphed. In FIG. 11 illustrating after graph switching processing, a plurality of graphs are created using some physical quantity data d1 included in each of the extracted detection information. That is, in FIG. 11, temporal changes in some physical quantities (for example, various accelerations, tool-side spindle loads, waveforms obtained using a plurality of physical quantities, etc.) detected within a predetermined time including time point T3 It is displayed on the display 4B as a graph.

By displaying a plurality of graphs, it is possible to simultaneously check time-series changes of a plurality of physical quantities, and it becomes easy to identify the cause of processing defects. Moreover, in FIG. 10, the temporal change of the vibration acceleration was displayed on the display 4B as a graph. As shown in FIG. 11, it is also possible to easily identify the cause of the processing failure, for example, even when a processing failure occurs due to reasons other than vibration, by also showing temporal changes in other physical quantities. .

Further, in FIG. 11, information (date / time) of the selected time point T3 and a plurality of data included in the detection information D3 associated with the time point T3 (for example, processing condition data d3 included in the detection information D3) At least a part) is displayed on the display 4B as machine information so as to be visible.

Further, for example, as shown in FIG. 10, an icon of “output” is displayed on the display 4B, and the user operates the operation unit 4D to click the “output” icon. In this case, the control circuit 4C recognizes that the operation unit 4D has received the operation, configures a tabular file using a plurality of data, and stores the file in the memory 4E. Here, each piece of data constituting a tabular file is data included in a plurality of pieces of detection information detected within a predetermined time including the time point T3. The tabular file can also be displayed on the display 4B.

FIG. 12 is a diagram illustrating an example of the tabular file being displayed on the display 4B.

As described above, for example, when time point T3 is selected, a plurality of detection information detected within a predetermined time including the time point T3 is extracted from the memory 4E and graphed. In FIG. 12 illustrating the output tabular format, the table is created using a plurality of physical quantity data d1-1 to d1-N included in the extracted detection information. That is, in FIG. 12, temporal changes of the plurality of physical quantities detected within a predetermined time including the time point T3 are digitized as a table and displayed on the display 4B.

The table format file may be extracted from the memory 4E, and the table illustrated in FIG. 12 may be displayed on a monitor of the PC by using a PC or the like prepared separately from the management apparatus 4.

Further, in a state where the display of FIG. 10 is displayed on the display 4B, it is assumed that the user operates the operation unit 4D and selects a predetermined position in the displayed graph. For example, as shown in FIG. 13, a graph is displayed on the display 4B, and the user operates the operation unit 4D to select a predetermined position of the graph (the position of the tip of the arrow).

In this case, the control circuit 4C recognizes that the operation unit 4D has received the operation, and data included in detection information (hereinafter referred to as point detection information) corresponding to the selected predetermined position is , Display 4B.

FIG. 14 is a diagram illustrating the situation after the predetermined position of the graph is selected.

As described above, for example, when time point T3 is selected, a plurality of detection information detected within a predetermined time including the time point T3 is extracted from the memory 4E and graphed. In FIG. 14 illustrating after selecting a predetermined position of the graph, data Ma included in the point detection information is displayed on the display 4B. Further, the display illustrated in FIG. 14 also includes the content illustrated in FIG.

In the example of FIG. 14, for example, some physical quantity data d1 included in the point detection information, and processing condition data d3 included in the point detection information (for example, one of the processing condition data d3) A work identification number, a spindle identification number, etc.). Among the plurality of data included in the point detection information, which data is to be displayed as the data Ma may be arbitrarily selected by the user.

By displaying the data Ma together with the graph, information required by the user is displayed on the display 4B. Thus, the cause of the processing failure can be easily identified.

FIG. 15 is a diagram showing another display example after selecting a predetermined position of the graph.

In FIG. 15, the data Ma (the same type as the data Ma shown in FIG. 14) included in the point detection information is displayed on the display 4B, and the contents of the processing program PD included in the processing condition data d3 of the point detection information Is displayed on the display 4B. Here, in FIG. 15, a specific display example of the data Ma is omitted. Moreover, the content illustrated in FIG. 10 is also included in the display illustrated in FIG.

Note that the position of the processing program that was being performed when point detection information was detected may be displayed so as to be highlighted in processing program PD (refer to the underlined portion in processing program PD in FIG. 15). ).

As described above, the machine tool management system 100 according to the present embodiment includes the machine tool 2, the memory 4E, and the control circuit 4C. Then, the control circuit 4C determines whether or not the detection information is selection detection information that satisfies a predetermined determination condition. Furthermore, the control circuit 4C records a plurality of pieces of selection detection information in the memory 4E in association with a point in time when the selection detection information is detected.

Therefore, it is possible to automatically extract a plurality of pieces of selection detection information that satisfy the determination condition from among a large amount of detection information. Therefore, it is not necessary for the user to search for and extract detection information including data that is considered to be abnormal from among a large number of detection information, for example, and thus labor can be reduced. Therefore, as a result, the cause of the processing failure can be easily identified.

In the processing by the machine tool 2, the processing conditions change due to the change of the processing environment, the wear of the tool 15, the change of the processing program, and the like. As a result, chatter vibration, tool breakage, etc. may occur, and the above-mentioned processing failure may occur.

Further, in the machine tool management system 100 according to the present embodiment, the control circuit 4C arranges a plurality of selection detection information based on the point of time when it is associated with the selection detection information. For example, as described above, the selection detection information is arranged in the memory 4E in time series based on the point in time.

As described above, since the plurality of selection detection information are arranged in time series in the memory 4E, the user can easily recognize when the plurality of selection detection information satisfying the search condition is the detected detection information. it can.

The machine tool management system 100 according to the present embodiment also includes

sensor units

21, 22, 23. The detection information includes physical quantities (vibration value, load, number of rotations, temperature, etc.) detected by the

sensor units

21, 22, 23. Further, the control circuit 4C compares the physical quantity included in the detection information with the abnormality determination threshold. Then, the control circuit 4C selects detection information having a physical quantity that exceeds the abnormality determination threshold as selection detection information.

Therefore, detection information including physical quantities that can be determined to be abnormal can be automatically extracted as selection detection information from among a huge number of detection information. Therefore, the user can save the trouble of searching for and extracting detection information including the physical quantity of the abnormal value detected by the

sensor units

21, 22, 23 from the huge number of detection information.

Moreover, the machine tool management system 100 according to the present embodiment further includes an alarm generation device (NC device 3) that emits an alarm. Then, the detection information includes alarm information on an alarm detected by the NC device 3. Further, the control circuit 4C selects detection information having alarm information indicating occurrence of an alarm as selection detection information.

Therefore, detection information at the time when an alarm is issued by the NC device 3 can be automatically extracted as selection detection information from among a huge number of detection information. Therefore, the user can save time and effort of searching for and extracting detection information at the time when an alarm is issued due to some abnormality out of a huge number of detection information.

In addition, the machine tool management system 100 according to the present embodiment displays 4 B as a list displaying at least one copy of the plurality of selection detection information using a predetermined display item (for example, a date and time). And, further.

Therefore, the user can easily visually recognize the extracted selection detection information (for example, detection information detected at the time of occurrence of an abnormality). Further, each piece of selection detection information is displayed as a point of time on the display 4B. Therefore, when the cause of the processing failure or the like occurs can be easily identified from the displayed list.

Further, it is assumed that one predetermined display item is selected among the plurality of predetermined display items displayed in a list on the display 4B. In this case, the control circuit 4C according to the present embodiment extracts a plurality of pieces of detection information including the selection detection information corresponding to the selected predetermined display item from the memory 4E. Then, the control circuit 4C creates a graph indicating temporal change of the data, using the data included in the plurality of extracted detection information. Then, the control circuit 4C displays the graph on the display 4B.

Therefore, the user can easily analyze the displayed graph on the display 4B. Therefore, for example, the user can easily identify the cause of the abnormality such as the processing defect.

Further, in the machine tool management system 100 according to the present embodiment, the control circuit 4C differentially displays the position corresponding to the data included in the selection detection information from the other positions in the graph.

Therefore, the user can easily recognize the point of time of selection detection information including data indicating abnormality in the displayed graph. Therefore, the user can identify the cause of the abnormality more quickly.

Further, it is assumed that a predetermined position is selected in the displayed graph. In this case, the control circuit 4C according to the present embodiment displays, on the display 4B, data included in the detection information corresponding to the selected predetermined position.

Therefore, the convenience of analysis on the displayed graph is improved, and the analysis of the cause of the abnormality by the user is further promoted.

Second Embodiment
In the first embodiment, the control circuit 4C stores a plurality of pieces of detection information in the storage area R1 of the memory 4E (see FIG. 6). On the other hand, the detection information satisfying the determination condition is determined to be selection detection information, and a plurality of selection detection information are separately stored in the storage area R2 of the memory 4E (see FIG. 7). Then, a plurality of selection detection information items stored in the storage area R2 are displayed in a list using predetermined display items (see FIG. 9). The display of the graph on the display 4B is also described (see FIG. 10 and the like).

In the present embodiment, selection detection information satisfying the search condition (hereinafter referred to as search selection detection information) is selected from the plurality of selection detection information.

Here, as the search condition, for example, identification information of a processing program, identification information of an alarm, identification information of a tool, identification information of a work, and the like can be adopted.

The configuration of the machine tool management system according to the second embodiment is substantially the same as the configuration of the machine tool management system 100 according to the first embodiment shown in FIGS. Therefore, the description of the configuration of the machine tool management system according to the second embodiment is omitted here. Therefore, below, operation | movement of the machine tool management system which concerns on this Embodiment 2 is concretely demonstrated using the schematic block diagram shown by FIG.1, 2. FIG.

FIG. 16 is a flowchart showing the operation of the machine tool management system according to the second embodiment.

Referring to FIG. 2, control circuit 4C reads data browsing software stored in memory 4E. Then, the control circuit 4C performs control according to the data browsing software (see START in FIG. 16).

As described in the first embodiment, the plurality of selection detection information is displayed in a list on the display 4B using a predetermined display item (step S41 in FIG. 16). The operation until the display is substantially the same as the contents described in step S31 of FIG.

FIG. 17 is a diagram showing the content displayed on the display 4B after step S41. Referring to FIG. 17, as in FIG. 9, a predetermined display item indicating selection detection information is displayed on display 4B. However, in the present embodiment, as shown in FIG. 17, a “search” field for inputting a search condition is also displayed on the display 4B.

As shown in FIG. 17, in a state where the "search" column is displayed on the display 4B, the user inputs a search condition in the "search" column to the operation unit 4D (step in FIG. 16) S42). It is also possible to display a pull-down mark (▽) in the “search” field, select a preset search condition from the pull-down menu, and input a search condition. When the search condition is input, the control circuit 4C recognizes that the operation unit 4D has received the search condition, and performs the following operation.

As described in steps S4 and S5 of FIG. 4, a plurality of selection detection information D1, D3,..., Di are selected and stored in the memory 4E. Therefore, the control circuit 4C determines whether the selection detection information D1, D3, ..., Di stored in the memory 4E has data satisfying the input search condition.

The determination by the control circuit 4C is performed on each selection detection information of the plurality of selection detection information D1, D3, ..., Di stored in the memory 4E. Then, the control circuit 4C selects, as search selection detection information, selection detection information having data satisfying the input search condition from among the plurality of selection detection information D1, D3,. 16 steps S43).

For example, it is assumed that a search condition indicating a desired processing program is input in the "search" field. In this case, the control circuit 4C refers to the processing condition data d3 in the selection detection information D1, D3, ..., Di stored in the storage area R2. Then, control circuit 4C determines whether or not identification data indicating a desired processing program is included in processing condition data d3.

Then, it is assumed that control circuit 4C detects processing condition data d3 including identification data of a desired processing program in certain selection detection information. In this case, the control circuit 4C selects, as search selection detection information, selection detection information having the detected processing condition data d3 from among the plurality of selection detection information D1, D3, ..., Di.

In addition to the identification information of the processing program, identification information of an alarm, identification information of a tool, identification information of a work, and the like can be adopted as the search condition.

Thus, for example, when a tool identification number is input as a search condition, the control circuit 4C selects the selection detection information having the tool identification number from among the plurality of selection detection information D1, D3,. , Select as search selection detection information.

When an alarm identification number is input as a search condition, the control circuit 4C searches the selection detection information having the alarm identification number from among the plurality of selection detection information D1, D3, ..., Di. Select as selection detection information.

When a work identification number is input as a search condition, the control circuit 4C searches the selection detection information having the work identification number out of the plurality of selection detection information D1, D3, ..., Di. Select as selection detection information.

Next, the control circuit 4C records the selected search selection detection information in the storage area R2 of the memory 4E, for example, in association with the time when the search selection detection information is detected. In this case, in addition to the plurality of selection detection information D1, D3,..., Di, search selection detection information is recorded in the storage area R2 in a section other than this.

Here, in the case where a plurality of search selection detection information are selected in step S43, control circuit 4C is based on the point in time when the plurality of search selection detection information is associated with the search selection detection information in storage region R2. And arrange in time series.

Then, the control circuit 4C controls the display 4B to display the selected search selection detection information on the display 4B using a predetermined display item (such as a time point) (step S44 in FIG. 16).

Here, when a plurality of search selection detection information is selected in step S43, the control circuit 4C causes the display 4B to display a plurality of selected search selection detection information on a predetermined display item (such as a time point). Use and display as a list.

FIG. 18 is a diagram exemplifying a state in which a plurality of search selection detection information are displayed on the display 4B using predetermined display items (point in time associated with the search selection detection information).

As illustrated in FIG. 18, in the column of “search result”, each predetermined display item (time point) corresponding to the search selection detection information is arranged on the display 4B in time series order based on the time point There is. Further, on the display 4B, in the "selection detection information" column, each predetermined display item (time point) corresponding to the selection detection information is arranged in chronological order based on the time point.

As can be seen from the above, the search selection detection information stored in the storage area R2 uses a plurality of selection detection information D1, D3, ..., Di stored in the storage area R2 using a search condition. It is the result of narrowing down. Similarly, the predetermined display item displayed in the "search result" column is a result of narrowing down a plurality of predetermined display items displayed in the "selection detection information" column using a search condition. is there.

Here, as shown in FIG. 18, in the “search result” of the display 4B, a plurality of predetermined display items are displayed in a list. In this state, one predetermined display item is selected from the plurality of predetermined display items (step S45 in FIG. 16). In FIG. 18, time point T3 is selected. When one predetermined display item is selected, the control circuit 4C performs graphing as described in the first embodiment.

That is, the control circuit 4C detects a plurality of detection information including search selection detection information corresponding to a predetermined display item (time point) selected from among the plurality of detection information stored in the storage area R1 of the memory 4E. Are extracted from the memory 4E. Here, the plurality of pieces of detection information to be extracted are detected information detected within a predetermined time including the selected time point.

Then, the control circuit 4C creates a graph indicating temporal change of the data using the data included in the plurality of extracted pieces of detection information. The detection information includes a plurality of data.

For example, it is assumed that a graph indicating temporal change in vibration acceleration of the tool spindle 2a1 is to be displayed. In this case, the control circuit 4C extracts physical quantity data d1 each indicating the value of “vibration acceleration of the tool spindle 2a1” included in each piece of detection information. The control circuit 4C then uses the physical quantity data d1 indicating the value of the extracted "vibration acceleration of the tool spindle 2a1" to create a graph indicating time change.

Thereafter, the control circuit 4C causes the display 4B to display the created graph (step S46 in FIG. 16).

FIG. 19 is a diagram showing how the created graph is displayed on the display 4B in addition to the contents displayed in FIG.

As described in the first embodiment, control circuit 4C emphasizes the position of the data included in the search selection detection information selected by the user in the graph displayed on display 4B, and positions the other graphs. It may be displayed in a discriminatory manner. In the example of FIG. 19, as in the first embodiment, the positions of data included in the search selection detection information selected by the user in the graph are emphasized by the black circles.

As described in the first embodiment, the user may perform an operation of instructing graph switching on the operation unit 4D. In this case, the control circuit 4C displays a plurality of types of graphs on the display 4B using data included in the plurality of detection information including the selected search selection detection information. Here, as can be understood from the above, the plurality of detection information items are detection information items detected within the predetermined time including the time point associated with the selected search detection information item.

As described above, the search selection detection information is a result of narrowing down the plurality of selection detection information using the search condition. Therefore, the display examples of the plurality of types of graphs can be understood, for example, by referring to FIG. 11 already described. The number and types of graphs to be displayed may be arbitrarily selected by the user.

Further, as described in the first embodiment, the user may click the “output” icon on the operation unit 4D. In this case, as described in the first embodiment, the control circuit 4C creates a tabular file using predetermined data, and stores the tabular file in the memory 4E. In addition, the file of the table format may be displayed on the display 4B or another monitor as a table.

Here, as described above, the search selection detection information is a result of narrowing down a plurality of selection detection information using a search condition. Therefore, the display example of the table can be understood, for example, by referring to FIG. 12 already described. As described in the first embodiment, the table is created using data included in a plurality of detection information (including selected search selection detection information) detected within a predetermined time.

Further, as described in the first embodiment, the user may operate the operation unit 4D to select a predetermined position in the displayed graph. In this case, the control circuit 4C displays, on the display 4B, data included in the detection information corresponding to the selected predetermined position.

Here, as described above, the search selection detection information is a result of narrowing down a plurality of selection detection information using a search condition. Therefore, the display example of the data can be understood, for example, by referring to FIGS. 14 and 15 described above.

In the above description, as shown in FIG. 17, only one search condition can be input. However, a plurality of search conditions may be input. In the example of FIG. 20, a screen on which two search conditions can be input is displayed on the display 4B.

In the example of FIG. 20, the item of “search condition addition” is displayed on the display 4B. When it is desired to increase the number of search conditions, the user operates the operation unit 4D to click the item of “add search condition”. As a result, a field where the search condition can be input is additionally displayed on the display 4B.

When a plurality of search conditions are input, the control circuit 4C performs a plurality of search conditions input for the plurality of selection detection information D1, D3, ..., Di stored in the storage area R2. The selection detection information having data satisfying (specifically, AND conditions regarding a plurality of search conditions or OR conditions regarding a plurality of search conditions) is selected as search selection detection information.

As described above, the machine tool management system according to the second embodiment further includes the operation unit 4D that receives the search condition. Then, the control circuit 4C selects search selection detection information that satisfies the search condition from the plurality of selection detection information.

Therefore, the user can select desired selection detection information as search selection detection information from among a plurality of selection detection information. Therefore, the convenience of the machine tool management system can be improved, for example, in the analysis of an abnormality or the like in the machine tool 2, the identification of the cause of the abnormality, and the like.

The user may input a search date range to the operation unit 4D after step S42 in FIG. In this case, the control circuit 4C selects, from the plurality of pieces of selection detection information D1, D3,..., Di, selection detection information that satisfies the input search condition. Furthermore, the control circuit 4C refers to the time point associated with the selected detection information that satisfies the search condition. Then, the control circuit 4C compares the point in time with the input search date range, and selects one of the selected selection detection information and within the input search date range as search selection detection information.

Embodiment 3
In the second embodiment, the control circuit 4C performs selection detection with data that satisfies the input search condition for the plurality of pieces of selection detection information D1, D3, ..., Di selected in step S4 of FIG. Information was selected as search selection detection information.

In the third embodiment, detection information satisfying the search condition accepted by the operation unit 4D is selected as search detection information from among a plurality of detection information stored in the storage area R1.

Here, as the search condition, as described in the second embodiment, for example, identification information of a processing program, identification information of an alarm, identification information of a tool, identification information of a work, and the like can be adopted.

The configuration of the machine tool management system according to the third embodiment is substantially the same as the configuration of the machine tool management system 100 according to the first embodiment shown in FIGS. Therefore, the description of the configuration of the machine tool management system according to the third embodiment is omitted here. Therefore, below, operation | movement of the machine tool management system which concerns on this Embodiment 3 is concretely demonstrated using the schematic block diagram shown by FIG.1, 2. FIG.

Further, the operation until storing a plurality of pieces of detection information in the storage area R1 of the memory 4E described in the first embodiment is substantially the same also in the third embodiment (see FIG. 6).

FIG. 21 is a flowchart showing the operation of the machine tool management system according to the third embodiment.

The control circuit 4C reads data browsing software stored in the memory 4E. Then, the control circuit 4C performs control according to the data browsing software (see START in FIG. 21).

In the present embodiment, the control circuit 4C reads a plurality of pieces of detection information stored in the storage area R1 of the memory 4E. Then, using the predetermined items, a list of the plurality of read detection information is displayed on the display 4B (step S51 in FIG. 21).

For example, as described with reference to FIG. 6, a plurality of pieces of detection information D1, D2, D3, D4,..., DN-1, DN correspond to the detection information D1, D2, D3, D4,. It is assumed that DN-1 and DN are stored in the storage area R1 of the memory 4E in association with time points T1, T2, T3, T4,..., TN-1 and TN detected. In this case, the control circuit 4C reads the plurality of pieces of detection information D1, D2, D3, D4,..., DN-1, DN stored in the storage area R1.

Then, the control circuit 4C causes the display 4B to display the plurality of pieces of detection information D1, D2, D3, D4, ..., DN-1 and DN read out. Here, in the display 4B, the detection information D1, D2, D3, D4, ..., DN-1, DN are displayed in a list using predetermined display items indicating the respective detection information. For example, time T1, T2, T3, T4, ..., TN-1, TN associated with detection information D1, D2, D3, D4, ..., DN-1, DN as predetermined display items Can be adopted.

FIG. 22 is a diagram showing how a plurality of detection information items D1, D2, D3, D4,..., DN-1, DN are displayed on the display 4B using predetermined display items.

In FIG. 22, the predetermined display items are time points T1, T2, T3, T4, ..., TN-1 associated with the detection information D1, D2, D3, D4, ..., DN-1, DN. , TN. As described in the first embodiment, each time point is information consisting of date and time.

When FIG. 22 is displayed on the display 4B, the display at time point T1 indicates the detection information D1, the display at time point T2 indicates the detection information D2, and the display at time point TN indicates the detection information DN Is shown.

Therefore, in the display example of FIG. 22, the time T1, which is a display item, is linked to the detection information D1 stored in the storage area R1. Further, the time T2 which is a display item is linked to the detection information D2 stored in the storage area R1. Further, the point of time TN, which is a display item, is linked to the detection information DN stored in the storage area R1.

Now, as shown in FIG. 22, the display 4B displays a "search" field for inputting a search condition. In the state where the "search" column is displayed on the display 4B, the user inputs a search condition in the "search" column to the operation unit 4D (step S52 in FIG. 21). It is also possible to display a pull-down mark (▽) in the “search” field, select a preset search condition from the pull-down menu, and input a search condition.

Here, as the search condition, as described in the second embodiment, identification information of a processing program, identification information of an alarm, identification information of a tool, identification information of a work, and the like can be adopted. The control circuit 4C recognizes that the operation unit 4D receives the search condition, and performs the following operation.

Control circuit 4C determines whether or not detection information D1, D2, D3, D4, ..., DN-1 and DN stored in storage region R1 have data satisfying the input search condition. Do.

The determination by the control circuit 4C is performed on each piece of detection information of the plurality of pieces of detection information D1, D2, D3, D4, ..., DN-1, DN stored in the storage region R1. The control circuit 4C then uses, as search detection information, detection information having data that satisfies the input search condition from among the plurality of detection information D1, D2, D3, D4, ..., DN-1, and DN. , And (step S53 in FIG. 21).

For example, it is assumed that a search condition indicating a desired processing program is input in the "search" field. In this case, the control circuit 4C controls the desired processing program in the processing condition data d3 in the detection information D1, D2, D3, D4, ..., DN-1, DN stored in the storage area R1. It is determined whether or not identification data indicating.

Then, it is assumed that control circuit 4C detects processing condition data d3 including identification data of a desired processing program. In this case, the control circuit 4C searches the detection information having the processing condition data d3 detected from among the plurality of detection information D1, D2, D3, D4,. Choose as.

Therefore, for example, when a tool identification number is input as a search condition, the control circuit 4C identifies the tool among the plurality of pieces of detection information D1, D2, D3, D4, ..., DN-1, DN. Detection information having a number is selected as search detection information.

When an alarm identification number is input as a search condition, the control circuit 4C selects the alarm identification number from among the plurality of detection information D1, D2, D3, D4, ..., DN-1, DN. The detection information which it has is selected as search detection information.

When a workpiece identification number is input as a search condition, the control circuit 4C selects the workpiece identification number from among the plurality of pieces of detection information D1, D2, D3, D4, ..., DN-1, DN. The detection information which it has is selected as search detection information.

Next, the control circuit 4C records the selected search detection information in the storage area R2 of the memory 4E, for example, in association with the time point when the search detection information is detected. Here, when a plurality of search detection information is selected, the control circuit 4C causes each of the plurality of search detection information in the storage area R2 to be in time series based on the point of time associated with the search detection information. Arrange.

Then, the control circuit 4C controls the display 4B to display the selected search detection information on the display 4B using a predetermined display item (such as a time point) (step S54 in FIG. 21).

Here, when a plurality of search detection information is selected, the control circuit 4C executes a list of the plurality of selected search detection information in a time series as a list using predetermined display items (such as time points). Display on display 4B.

FIG. 23 is a diagram showing a state in which a plurality of search detection information are displayed on the display 4B using predetermined display items (point in time associated with the search detection information).

As exemplified in FIG. 23, in the column of "search detection information", each predetermined display item (time point) corresponding to the search detection information is arranged in time series order on the display 4B based on the time point. There is. Further, on the display 4B, in the "detection information" column, each predetermined display item (time point) corresponding to the detection information is arranged in chronological order based on the time point.

Here, in the "search detection information" column of the display 4B shown in FIG. 23, one predetermined display item is selected from a plurality of predetermined display items (step S55 in FIG. 21).

For example, in FIG. 23, it is assumed that time point Tf is selected. In this case, as described in the first embodiment, the control circuit 4C performs graphing.

That is, the control circuit 4C stores, as a memory, a plurality of detection information including search detection information corresponding to a predetermined display item (point in time Tf) selected from among the plurality of detection information stored in the storage region R1. Extract from 4E. Here, the plurality of pieces of detection information to be extracted are detected information detected within a predetermined time including the selected time point Tf.

Thereafter, the control circuit 4C causes the display 4B to display the created graph (step S56 in FIG. 21). FIG. 24 is a diagram illustrating how a graph is displayed on the display 4B. FIG. 24 includes the contents displayed in FIG. 23 in addition to the graph.

Here, as in the first embodiment, in the graph displayed on display 4B, control circuit 4C emphasizes the position of the data included in the search detection information selected by the user in step S55, The position of the graph may be displayed differentially.

As described above, when the time point Tf is selected, the position of data included in the search detection information associated with the time point Tf is emphasized. On the graph illustrated in FIG. 24, the position corresponding to the time point Tf is displayed as a black circle.

As described in the first embodiment, the user may perform an operation of instructing graph switching on the operation unit 4D (for example, when the “switch” icon displayed in FIG. 24 is clicked). To do). In this case, the control circuit 4C displays a plurality of types of graphs on the display 4B using data included in the plurality of detection information including the search detection information selected in step S55 (see FIG. 25). ). Here, as can be seen from the above, the plurality of detection information items are detection information items detected within the predetermined time including the time point associated with the search detection information item selected in step S55.

In the example of FIG. 25, the search detection information associated with the time point Tf is selected, and a plurality of detected information are extracted within a predetermined time including the time point. Then, using data included in each piece of detection information, a plurality of graphs Gh1, Gh2, Gh3, and Gh4 indicating time change are created and displayed. The number and types of graphs to be displayed may be arbitrarily selected by the user. Further, in the example of FIG. 25, the illustration of the shape of each of the graphs Gh1 to Gh4 is omitted.

Further, as described in the first embodiment, it is assumed that the user clicks on the “output” icon displayed in FIG. 24, for example, on the operation unit 4D. In this case, as described in the first embodiment, the control circuit 4C creates a tabular file using predetermined data, and stores the tabular file in the memory 4E. In addition, the file of the table format may be displayed on the display 4B or another monitor as a table. The table is created using data included in the plurality of pieces of detection information detected within the predetermined time, including the search detection information selected in step S55. The display example of the table can be understood, for example, by referring to FIG. 12 already described.

Further, as described in the first embodiment, the user may operate the operation unit 4D to select a predetermined position in the displayed graph. Here, in the present embodiment, the graph is created using data included in the plurality of pieces of detection information detected within the predetermined time, including the search detection information selected in step S55.

In this case, as described in the first embodiment, the control circuit 4C causes the display 4B to display data included in the detection information corresponding to the selected predetermined position. FIG. 26 is a diagram illustrating an example after selecting a predetermined position of the graph.

In FIG. 26, the arrow to the graph indicates the position selected by the user. In FIG. 26 illustrating after selecting a predetermined position of the graph, data Ma included in detection information (point detection information) having data of the position of the arrow is displayed on the display 4B. Moreover, the content illustrated in FIG. 23 is also included in the display illustrated in FIG.

In the example of FIG. 26, for example, some physical quantity data d1 included in the point detection information, and processing condition data d3 included in the point detection information (for example, one of the processing condition data d3) A work identification number, a spindle identification number, etc.). Among the plurality of data included in the point detection information, which data is to be displayed as the data Ma may be arbitrarily selected by the user.

In addition to the data Ma included in the point detection information, as described with reference to FIG. 15 in the first embodiment, the content of the processing program included in the processing condition data d3 of the point detection information is the display 4B. May be displayed.

As described above, the machine tool management system according to the third embodiment includes the machine tool 2, the memory 4E, and the control circuit 4C. The machine tool management system further includes an operation unit 4D that receives the search condition. Then, the control circuit 4C selects search detection information that satisfies the search condition from among the plurality of detection information stored in the memory 4E. Further, the control circuit 4C records a plurality of search detection information in the memory 4E in association with the time when the search detection information is detected.

Therefore, the user can select desired detection information as search detection information from a huge number of detection information. Therefore, the convenience of the machine tool management system can be improved, for example, in the analysis of an abnormality or the like in the machine tool 2, the identification of the cause of the abnormality, and the like. That is, as a result, the cause of the processing failure can be easily identified.

In the above description, only one search condition can be input. However, as in the second embodiment, a plurality of search conditions may be input. When a plurality of search conditions are input, the control circuit 4C satisfies a plurality of input search conditions for a plurality of pieces of detection information stored in the storage area R1 (specifically, a plurality of searches) Detection information having AND condition related conditions or OR conditions related to a plurality of search conditions is selected as search detected information.

In addition, after step S52 in FIG. 21, the user may input a search date range to the operation unit 4D. In this case, the control circuit 4C selects, from among the plurality of pieces of detection information, detection information that satisfies the input search condition. Furthermore, the control circuit 4C refers to the time point associated with the detection information that satisfies the search condition. Then, the control circuit 4C compares the current time point with the input search date range, and selects, from the selected detection information, one within the input search date range as search detection information.

The machine tool 2 is not limited to that illustrated in the above embodiment. The machine tool 2 may be a lathe, a milling machine, a machining center, a laser processing machine, an additional manufacturing apparatus, a friction stir welding apparatus, or the like, or a combination thereof.

Although the present invention has been described in detail, the above description is an exemplification in all aspects, and the present invention is not limited thereto. It is understood that countless variations not illustrated are conceivable without departing from the scope of the present invention.

1 base 2 machine tool 2a1 tool spindle 2B1 work spindle 3 NC device (alarm generation device)
DESCRIPTION OF SYMBOLS 4 management apparatus

4A communication part 4B display

4C control circuit

4D operation part 4E memory 10 work 15 tools 21 tool sensor unit (detection part)
22 Work sensor unit (detection unit)
23 Base sensor unit (detection unit)
100 machine tool management system

Claims

Machine tools for processing workpieces,
A memory for recording detection information detected for the machine tool in association with a time when the detection information is detected;
A control circuit connected to the memory;
The control circuit
It is determined whether the detection information is selection detection information that satisfies a predetermined determination condition,
A plurality of pieces of the selection detection information are recorded in the memory in association with a point in time when the selection detection information is detected,
Machine tool management system.
The control circuit
In the memory, the plurality of selection detection information are arranged based on the time point associated with the selection detection information,
The machine tool management system according to claim 1.
It further comprises a display for displaying at least one copy of the plurality of selection detection information as a list using a predetermined display item,
The machine tool management system according to claim 1.
The control circuit
When one of the predetermined display items is selected from the plurality of predetermined display items displayed in a list on the display, a plurality of items including the selection detection information corresponding to the selected predetermined display item; Extracting detection information from the memory,
Using data contained in the plurality of extracted detection information, a graph indicating temporal change of the data is created;
Displaying the graph on the display;
The machine tool management system according to claim 3.
The control circuit
In the graph, a position corresponding to the data included in the selection detection information corresponding to the selected predetermined display item is displayed differentially from other positions.
The machine tool management system according to claim 4, characterized in that:
The control circuit
In the graph, when a predetermined position is selected, data included in the detection information corresponding to the selected predetermined position is displayed on the display.
The machine tool management system according to claim 4.
The predetermined display item is
The point in time associated with the selected detection information,
The machine tool management system according to claim 3.
It further comprises a detection unit that detects physical quantities,
The detection information is
Including the physical quantity detected by the detection unit,
The machine tool management system according to claim 1.
The control circuit
Comparing the physical quantity included in the detection information with an abnormality determination threshold value;
The detection information having the physical quantity exceeding the abnormality determination threshold is determined as the selection detection information.
The machine tool management system according to claim 8.
The detection unit is
Detect multiple physical quantities,
The machine tool management system
Each has an abnormality determination threshold value corresponding to each of the physical quantities,
The control circuit
For each of the physical quantities included in the detection information, the physical quantity is compared with the abnormality determination threshold value corresponding to the physical quantity,
When the physical quantity exceeding the abnormality determination threshold is detected in at least one of the comparisons, the detection information having the detected physical quantity is determined as the selection detection information.
The machine tool management system according to claim 8.
It also has an alarm generator that emits an alarm,
The detection information is
Including alarm information regarding the alarm detected by the alarm generating device,
The machine tool management system according to claim 1.
The control circuit
Determining the detection information having the alarm information indicating occurrence of an alarm as the selection detection information;
The machine tool management system according to claim 11.
It further comprises an operation unit that accepts search conditions,
The control circuit
The search selection detection information satisfying the search condition accepted by the operation unit is selected from the plurality of selection detection information,
The machine tool management system according to claim 1.
Recording detection information detected for a machine tool in a memory in association with a time point at which the detection information is detected;
Determining whether the detection information is selection detection information satisfying a predetermined determination condition;
Recording a plurality of the selection detection information in association with a point in time when the selection detection information is detected, each in the memory.
Machine tool management method.
Machine tools for processing workpieces,
A memory for recording detection information detected for the machine tool in association with a time when the detection information is detected;
An operation unit that receives search conditions;
A control circuit connected to the memory;
The control circuit
The search detection information satisfying the search condition received by the operation unit is selected from the plurality of detection information stored in the memory,
A plurality of the search detection information are recorded in the memory in association with a point in time when the search detection information is detected,
Machine tool management system.